Smoke-cooling pipe



Aug. 22, 1950 E. J. coRNETT SMOKE-COOLING PIPE Filed oct. 1, 194e IN VEN TOR.

lupin Patented Aug. 22, 1950 UNITED STATES SMOKE-COOLING PIPE Elton J. Cornett, Los Angeles, Calif.

Application October 1, 1946, Serial No. 700,589

l Claim.

rfhis invention relates to a smoke-cooling p1pe.

Although numerous smoking pipes have been devised, and in some instances placed upon the market, which provide for cooling the smoke for the smoker, yet there still remains room for improving such devices in regard to simplicity of construction and ease of'assembling and disassembling.

It is well known that the nicotine-containing substance generated by smoking tends to cause the parts of such pipes to adhere to each other thus rendering it more diiicult to disassemble them after use.

Accordingly it is an object of the present invention to provide for pipes of the class to which the invention pertains, an assembly of smokeconveying elements which can be more readily assembled and disassembled.

A more specic object is to provide an improved combination of a tapered spiral insert member around which the smoke circulates, with an improved mounting means for said member and screw threaded means for loosening said member preparatory to its removal and for positively wedging it in place after its insertion.

Other objects are: to provide improved means to prevent the nicotine in the pipe stem from backflow into the bowl; and to provide improved means to lock the bowl in its attached relation f to the pipe stem.

Other objects, advantages and features of invention will hereinafter appear.

Referring to the accompanying drawing, which illustrates a preferred embodiment of the invention,

Fig. 1 is a side elevation of the complete device, a portion of the side wall thereof being broken away to show interior construction.

Fig. 2 is a longitudinal midsection of the device except that certain central parts are shown in elevation.

Fig. 3 is a section on line 3 3 of Fig. 2.

Fig. 4 is a cross-section on line 4 4 of Fig. 2, the upper part of the bowl structure being broken away to contract the view.

Fig. 5 is a perspective view of the spark arrester per se.

Referring in detail to the drawing, therein is shown a tubular pipe stem 'l into one end of which is inserted a conventional mouthpiece 8, and adjacent to the other end of which is mounted an outer bowl 9 having a iiattened bottom Hl except that said bottom is provided across its lower surface with a diametrical rib I I which TENT OFFICE isi- 209) seats in a groove I2 across the top of an otherwise fiat-topped rise I3 formed on the side of the pipe stem l. Said outer bowl 9 is a spherically shaped shell with a truncated upper portion, thus forming a circular opening through which is inserted an inner, generally cylindrical cup-shaped, preferably ceramic bowl I4. The bottom of the latter bowl is dished, having a circular flat surface which abuts against a slight,

` circular, flat-topped rise I5 of the outer bowl.

An axially apertured attaching screw I6 serves to attach the two bowls to each other and to the adjacent side portion of the pipe stem l, the bottom of the inner bowl being internally countersunk to receive the head of said screw. The bottoms of the two bowls and underlying part of the pipe stem have registering circular apertures to receive said screw, the aperture through the side of the pipe stem being screwthreaded for the screw to screw into it. The inner end of said screw projects into the lumen or passageway 'la of the pipe stem so as to prevent backflow of nicotine-laden substances into the inner bowl Ill. There is an air space I8 between the two bowls which is vented at I9 and 20 and keeps the outer bowl from being unduly heated. Also the conventional heat-radiating fins 2I of the outer bowl and 22 of the pipe stem enhance the cooling effect.

The lumen 'la of the pipe stem is uniformly tapered from a point adjacent to the mouthpiece to its bowl-carrying end to have fitted into it a tubular, correspondingly tapered insert member 25 which, as viewed in Fig. 2, occupies somewhat more than the right hand half of the tapered portion of said lumen la. Said insert member has a spirally grooved exterior surface 26 in a sealed-in relation to the inner surface of said tubular pipe stem thus providing around said member a spiral channel of such an extended length as adequately to cool the smoke passing therethrough. Said channel terminates a little short of the smaller end of the insert member and also a little short of its larger end. As shown in Fig. 4, at the latter end of said insert member four ninety degrees apart smoke passages 2l are provided to conduct the smoke into the space between that end of the insert member and the mouthpiece, and four like smoke-conducting passages 28 are provided at the smaller end of the insert member to conduct the smoke eventually through the mouthpiece 8 to the smokers mouth. The hot smoke from the bowl is thus distributed more evenly 3 to the cooling iins 22 of the pipe stem to the gratication of the smoker.

That end portion of the lumen 25a of the insert member 25 which is adjacent to the bowl 9 is internally screw-threaded and has screwed into it the inner end portion of a screw rod 30, said rod having at its outer end a kerf-carrying head 3| which, when the rod is well screwed down, forms a fluid tight closure for the bowlcarryingr end of the pipe stem. 'Ihe screwing down of said rod wedges the tapered insert member 25 into the correspondingly tapered lumen of the pipe stern so that the screwthread-like exterior of said member is in a sealed relation to the surrounding wall of the pipe stem and the smoke can travel only along the spiral path between said member and pipe stem.

A tubular member 33 is attached to the inner end of the mouthpiece 8 by means of a coupling sleeve 34 which surrounds the expanded end portion 35 of the mouthpiece passage 36. Said tubular member projects somewhat into the internally expanded adjacent end portion of the insert member, there being an annular, smokeconducting space 31 between the insert member and the contained portion of said tubular member.

A segmental spherical, foraminated spark ar rester 40 is provided for the bowl portion of the pipe, which is attached thereto by means of arcuate spring arms 4I which form outer end portions of the 4hinge structure 42. A catch element 43 vcarried by the free side portion of the spa-rk arresting hood 40 cooperates with the top n of the bowl to hold the hood closed.

In assembling the parts of the pipe, before the mouthpiece is attached the tapered insert member 25 is inserted into the adjacent end of the pipe stem until the grooved exterior por-tion of said insert member ts closely within the lumen 1a of the pipe stem. Then the screw rod 30 is inserted into the opposite end of the pipe stem and is screwed into the threaded end portion of the lumen 25a of the insert member with sufcient force to wedge said insert member into the desired sealed relation to .the lumen 'la of the pipe stem and at the same time to cause the head of the screw to form a fluid tight closure for the adjacent -end of the pipe stem.

In disassembling the same parts, first the mouthpiece is removed and then the screw 30 is unscrewed from the insert member, whereupon said screw is used as a presser member to push the insert member free from its wedged-in relation to the pipe stem. The pipe stem may then be positioned with its mouthpiece end directed downwardly, causing the insert member to drop out.

I claim:

In a pipe of the kind described, a tubular stem with a lumen, said stem having a mouthpiece at one end and a bowl carried by its opposite end portion in communication with said lumen of said stem, said lumen tapering from adjacent to said mouthpiece toward the .bowl-carrying end of the stem, a tubular insert member correspondingly tapered and having a spirally grooved exterior surface forming a smoke conduit therearound, said grooved surface being in a sealed-in relation to the inner surface of said tubular pipe stem, said insert member having internal screw threads in its smaller end portion, and a screw rod having at one end a head to close the outer end of the pipe stem and a screw-threaded inner end portion to screw into the aforesaid internal screw threads of said insert member, to draw the latter into a wedged-in relation to said pipe stem.

ELTON J. CORNE'I'I.

REFERENCES CITED The following references are of record in the le of this patent:

UNITED STATES PATENTS Number Name Date 571,805 Stark Nov. 24, 1896 890,751 Austin June 15, 1908 973,870 Matson Oct. 25, 1910 11174389 Broz Sept. 30. 1913 1,510,290 Morgan Sept. 30, 1924 1,556,236 Miller Oct. 6, 1925 2,164,929 Lavietes J-uly 4, 1939 2,269,541 MacDonald Jan. .13, 1942 2,397,294 Schultz Mar. 26, '1946 FOREIGN PATENTS Number Country Date 61,250 Switzerland June 28, 1912 

